Collective Dynamics Of Stokesian Swimmers With Impulsive Acceleration

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REVIEWS - Journal of the Indian Institute of Science

by G Subramanian 2012 Cited by 12 not come from bursts of acceleration generated kinematics of Stokesian swimmers arises from the 'Collective hydrodynamics of swimming microorganisms', Koch, D.L. and Figure 12: Impulse response to attractant in wild-type cells.

Wave Vortex Interactions in Fluids and Superfluids

7 Jan 2021 tum fluid dynamics, where quantized line vortices interact, with wave motions Rossby wave goes hand in hand with a westward acceleration Conservation Law for Pseudomomentum Plus Impulse The NLS equation, also called the Gross-Pitaevskii equation, is a model equation for the collective.

Collective dynamics of Stokesian swimmers with impulsive

by R Yano 2020 of Stokesian swimmers with impulsive acceleration (SSIA). We consider two types of intensity function, namely, the displacement-based intensity 

Eindhoven University of Technology MASTER Three - Pure

by J van Houwelingen 2013 Cited by 1 stand the hydrodynamics of the swimmer's hand (+ forearm) and hence drag coefficient of the swimmer's hand under accelerating conditions and furthermore be presented, starting from the Navier-Stokes equations and ending with an alternative flow and results in a collective oscillating movement of the fluid.

Meso-swimmer Suspensions: Immersed Boundary

by S Mirazimi 2018 Cited by 2 To fully understand the collective behaviour of swimmers in dilute namics are described by the Navier-Stokes equations. Fluid dynamics in this regime is distinctive since it combines aspects from regime, Cortez [5] applied vortex/​impulse methods to immersed We can see the acceleration of the.

UC San Diego - eScholarship

by R Alonso-Matilla 2018 On the distribution and swim pressure of run-and-tumble particles in confinement g is the acceleration of gravity, eg is a unit vector pointing in the direction of the gravity In the absence of particles, the fluid is governed by the Navier-​Stokes. 18 and collective dynamics of interacting active particles in confinement.


The effect of segmental acceleration can act as a mechanism for developing Computational Fluid Dynamics (CFD) models of a swimmer during a full stroke to due regard for the flow regime of the simulation (e.g. Navier-Stokes for viscous, Euler performed using manual video digitising, based on the collective data 

(2016), no. 1 - Mathematical Sciences Publishers

1 Nov 2016 [45], which solves single phase dynamics using an unsplit Meshkov instability(​RMI) that occurs when a sudden acceleration is forced on an interface Richtmyer [49] derived the impulsive growth rate relation for the amplitude of with Stokesian dynamics, or teaching Stokesian dynamics to swim, Phys.

Self-propulsion and fluid-mediated interaction of flapping

2 Self-propelled dynamics at low Stokes numbers: linear analysis. 57 II Collective dynamics of an infinite array of flapping wings in a viscous flow. 139 Fluid acceleration becomes, again, a dominant thrust source as the flapping swimmers become velocity in the nearby wake of an impulsively started cylinder.

Swarming in viscous fluids - Tom Chou - UCLA

by Y Chuang Cited by 15 equations, where fluid flow as well as swimmer density and motion are modeled as To efficiently study the collective dynamics of self-propelled particles in a fluid medium effective particle-particle coupling arising from viscous Stokes flows and where α and β quantify self acceleration and deceleration, re- spectively.

My title - Research Collection - ETH Zürich

logical features and swimming patterns may maximize speed, acceleration or The understanding of swimming dynamics and mechanisms is certainly a coupled to realistic fluid dynamics simulations to characterize collective swimming Stokes equations is coupled with the Brinkman penalization to enforce the no-slip 

Landmarks and frontiers in biological fluid dynamics

by JO Dabiri 2019 Cited by 9 broad relevance of fluid mechanics to biology has been increasingly The top 7 leading causes of death in 2016 were collectively swimming is via surface ships moving at low speed. field of the accelerating antenna) are more significant than viscous perturbations. Alternatively, the Navier-Stokes.

Streaming-enhanced flow-mediated transport - NSF-PAR

by T Parthasarathy 2019 Cited by 9 We are motivated by the accelerated pace of development of artificial and investigated for different flow regimes, including Stokes (Re → 0; dynamics characterized by sharp transitions (Gazzola et al. KOCH, D. L.​&SUBRAMANIAN, G. 2011 Collective hydrodynamics of swimming microorganisms:.

78 DS09 Abstracts - SIAM

work is to represent the collective dynamics as a system of coupled with impulsive all-to-all coupling. The present 3D Navier Stokes equations with the Boussinesq approx- imation. mimicking the vortex wake dynamics of swimming animals, the vehicle parameter acceleration and de-acceleration with applica-.

An Immersed Interface Method for Incompressible Flow with

by J Gabbard 2020 so, we solve the Navier-Stokes equations in vorticity-stream function form, using a second C Analytical Solution for an Impulsively Rotated Cylinder largely static, and are propelled by the rotary motion of propellers or the acceleration of fluid in a Computational fluid dynamics is an essential part of this pursuit, since.

Learning swimming escape patterns under energy constraints

by I Mandralis 2021 accelerating motion interlinked with phases of gliding. impulsive locomotion patterns have been the subject of intense The Navier-Stokes equations are solved by performing a direct numerical simulation Given the action, the environment transitions to a new state determined by the dynamics function.

Long-time persistence of hydrodynamic memory boosts - OSF

by SL Seyler Cited by 8 In a viscous fluid, the past motion of an accelerating particle is equation, non-​Markovian dynamics, Basset-Boussinesq-Oseen molecules [14, 15], unsteady motion of microswimmers tential with gaps, whereas pure Stokes dissipation tends displacement ∆xmax depends only on the total impulse.

Bio-inspired swimming and flying Vortex dynamics and fluid

by R Godoy-Diana 2014 Cited by 2 Canonical examples of flapping flight and undulatory swim- collective (thèse de Intesaaf Ashraf, 2014-2017), de miniaturisation des limit, known as Stokes flow, describes for instance the propulsion of microscopic organisms and the inertial force due to the oscillating acceleration of the wing itself.

BAMC Surrey 2017 - University of Surrey

10 Apr 2017 Recent progress in the mathematical theory of fluid dynamics The digital wave of data and analytics both shortens and accelerates the impact supply chain: why and how On the controllability of the Navier-Stokes equations Acoustic-​gravity waves generated by impulsive sources at the ocean.

The Dynamics of Legged Locomotion - ScholarlyCommons

by P Holmes 2006 Cited by 744 Biology is a broad and rich science, collectively producing vast Legged locomotion appears to be more tractable than swimming or flying, es- tion of the unsteady Navier Stokes equations (but see the comments on foot-contact new peg position at which the impulsive force acts, we obtain the angular 

Here - Yale University

In such cases, the standard equations of fluid dynamics may not be valid! are governed by the collective force from all particles rather than by collisions with channel is Bremmstrahlung (acceleration of free electrons by positively charged equation, the Navier-Stokes equations, and the energy equation, respectively.

City Research Online - City, University of London

11 Sep 2018 respect to the collective motion of animals, such as flocks of birds, with schools of fish [12-20] indicate that swimming in schools is more advantageous than isolated laminar, mathematically described by the Navier-Stokes equations, the [32] Quan, S., Dynamics of Droplets Impulsively Accelerated by 

Instability of expanding bacterial droplets - CORE

by A Sokolov Cited by 17 of different density that are impulsively accelerated25. However, the analogy with the In the Stokes limit (zero Reynolds number Re), a sphere rotating in an dependence of the collective dynamics of swimming bacteria. Phys. Rev. Lett.

Collective dynamics of Stokesian swimmers with impulsive

In this paper, we investigate the characteristics of collective motion of Stokesian swimmers with impulsive acceleration (SSIA). We consider two types of the 

Modeling and simulation of particle dispersions - mediaTUM

by X Bian macroscopic smoothed particle hydrodynamics (SPH) method to mesoscopic long-range HIs, the accelerated Stokesian dynamics (ASD) uses an Ewald- B) Thereafter, the transient behavior of an impulsively started solid Correlations and fluctuations of stress and velocity in suspensions of swimming microorganisms.

Hydrodynamic interactions in colloidal and biological systems

by M Reichert 2006 Cited by 40 9 Collective drafting dynamics of circling particles. 87. 9.1 Model well-defined boundary-value problem for the Navier-Stokes equation describing the flow field.

Solid-Fluid Interaction with Surface-Tension-Dominant Contact

Our novel three-way coupling method can simulate the dynamics of surface-​tension-dominant contact collective effect of pressure impulse and capillary force:.

Zebrafish swimming in the flow: a particle image - PeerJ

by V Mwaffo 2017 Cited by 28 zebrafish swimming in a dynamic environment reminiscent of its natural habitat, we The seeding particles in our experiments had a Stokes number of Stk < 5. × 10−5 vortex with a higher circulation produces a higher impulse on the fish body. Second, the linear acceleration of zebrafish during cruise.

2 Physiological Synergetics: A Holistic Concept Concerning

nicht Typ), coined to distinguish this collective mode from the all or as being in a dynamic flow equilibrium or steady state (see below) rhythm is alternatively accelerated or decelerated with respect to mospheric flows (by Navier-Stokes differential equations). fish swimming along), or in birds (when flying in coordi-.

Acceleration Versus Shear - DCDIS: Dynamics of Continuous

by M Stastna 2018 Dynamics of Continuous, Discrete and Impulsive Systems. Series B: response, including limit cycles, for both shear triggered and acceleration triggered flee response. They are so numerous that their collective presence can be way coupled Navier Stokes model with plankton swimming that modifies the fluid flow​ 

NNFM 119 - Nature-Inspired Fluid Mechanics - SpringerLink

polymers or sheets [2, 7], single and collective behavior of micro swimmers at low and fluid flow is governed by the Stokes equations, which result from the bound to VSG was critical for the accelerated removal from the cell surface. of each body segment which produces the propulsive impulse accelerate the water.

A Computational Model of the Fluid Dynamics of Undulatory

by LJ FAUCI 1996 Cited by 52 The full Na- vier-Stokes equations are solved in a domain of fluid within which an reproductive tract, swimming of non-smooth filaments, and collective ton's second law: mass times acceleration An impulse-based approximation of.

E cient lattice Boltzmann simulations of self-propelled particles

Particle response to an impulsive force. ( ) Sedimentation speed of Others have chosen to look at the collective dynamics of swimmers. For self- Stokes equations in Fourier space to compute the fluid velocity field. Hence they We now must consider the external acceleration term from Equation , g ⋅ ∇c. Martys et al.

Hydrodynamics of living fluids in microflows

This principle is related to the linearity of the Stokes equation and forces In particular, the issue of collective organization of swimmers was addressed effect of viscosity causing a sudden variation of the acceleration and the velocity gradient. of time 0 −( 0 − ) can be understood as an impulse function:.

Anthropogenic Sound and Fishes - WSDOT

by AD Hawkins 2019 Observed Effects on the Behavior of Fishes from Impulsive Sound Fishes lacking swim bladders that are sensitive only to sound particle relative to 1 picometer; particle velocity to 1nanometer per second (nm/s); and particle acceleration from pile driving to disrupt the collective dynamics of fish shoals, 

ORAL ABSTRACTS - Biomedical Engineering Society

7 Dec 2016 manually pipetting process and limitation of dynamic range. accelerated soak demonstrate the stability of the silk- organized differentiation and collective cell migration to form 3D ordered Navier Stokes Equation while an Arbitrary Lagrangian direction, allowing it to swim upwards against the flow.


2.13 (a) Acceleration, velocity and gap height of a cylinder falling vertically toward a fixed Collective dynamics of particles is also central to physical phenomena such as At low Reynolds numbers, where the flow is governed by Stokes equations, coefficient and the rotational torque impulse on particles upon collision.

2007 APS March Meeting

There, the q-dependent collective dynamics reveal a liquid like behaviour similar Of particular interest are the Lagrangian structure functions of the velocity difference and the acceleration D0 is the Stokes- Einstein diffusion coefficient. 11:51AM J22.00002 Simulations of Interacting Magnetic Micro-swimmers , ERIC 

Modeling and numerical simulation of self-propelled particles

Size dependence of the swimming velocity 25 Collective motion of self-propelled particles driven by external torque. 47. 3.1 be modeled by using the Stokesian dynamics [19] and an appropriate boundary condition has an alignment interaction and acceleration effect due to the hydrodynamic effect. The.

Swimming - Olympics

4 The mechanics of swimming, 51. Barry S. Bixler tion of the athletes, their coaches, and their collective accomplishments. phate (Pi) is enough to provide the initial impulse that signals the acceleration of energy consumption and therefore energy to fluid mechanists, are called the Navier-Stokes equa- tions, and they 

Hopping trajectories due to long-range interactions - PNAS

by AJ Buchner 2021 which we extract a full description of the dynamics and the stochasticity unconstrained swimmers interacting with an infinite planar wall tion for the pitching rate ˙θ and the tangential acceleration ˙U, The impulsive kinematics of trajectories within the C mode motion and collective behavior: A review.

PDF LinkPDF - The Company of Biologists

by CA York 2020 Cited by 2 hydrodynamics and kinematics of escape jets in squid throughout ontogeny using 2D/3D using direct measurements of jet wake properties (e.g. impulse, species and specific swimming behavior (linear acceleration, burst and coast the longitudinal coordinate along the jet axis, ψ is the Stokes stream function, and ρ is 

Motion of Euglena Gracilis - Research Repository UCD

by P Romanczuk 2015 Cited by 13 Abstract We study the velocity distribution of unicellular swimming algae Eu- coupled ensembles of such units and their large scale collective dynamics [19 ​26]. mechanism with force ap, Stokes friction and a random forces η(t) acting on the cell. Hence, the propulsive acceleration reads in this approximation ap = dq.

View CV - University of Maryland

Collective Dynamics and Control Laboratory and the UMD Autonomous Micro Air Special issue on bioinspired swimming: sensing and control. 45. with accelerating prey. Advisor, Louis Stokes Alliance for Minority Participation Program, Center for and Impulsive Systems, Robotics: Science and Systems Conference.

Long-time persistence of hydrodynamic memory boosts

by SL Seyler 2019 Cited by 8 In a viscous fluid, the past motion of an accelerating particle is retained as an imprint on the vorticity field, which based on Navier-Stokes [3,50,51], fluctuating hydrodynamics. [52 54] FIG. 2. For time-periodic driving with fixed impulse per cycle, numbers: Hydrodynamic collective effects of active pro-.

Redalyc.Abstracts of the International Congress of Research

by MJ Costa dynamics. The maximum and minimum angles, range of motion, angular A total of 21 male swimmers were prevention strategies in competitive swimmers. collective performance improvement. a created domain with discretized expressions of the Navier-Stokes equations. accelerations when compared with CON.

Tuna locomotion - Fas Harvard - Harvard University

by J Wang Cited by 16 play an important role in the swimming dynamics of scombrid fishes. A number of function of individual finlets with an assembled collective array of paper are the incompressible Navier Stokes equations, written acceleration/desecration)​, or for other Scombridae species fin propulsion during impulsive motion.

Proceedings of the XIIth International Symposium on

21 Apr 1999 effects in swimming using computational fluid Dynamics. quasi-CFD method (​which doesn't solve the Navier-Stokes equations) motions of salmon can generate high accelerations for leaps to negotiate to include more young swimmers in the French teams, and to create a collective of swimmers and.

An experimental investigation of oscillating spheres in a very

by F Box 2014 Cited by 1 on the dynamics of two interacting spheres was considered by comparing dulums' [1], G. G. Stokes considered the motion of a sphere in a very viscous fluid and of spherical particles and other synthetic swimmers is used to explore how flow pattern caused by an impulsive twist applied to an initially stationary.

Parallelisation of Swimmer Models for the Simulation of

by M Hofmann discrete element method for rigid body dynamics and the lattice Boltzmann method for fluid dynamics. From the conservation of momentum, the Navier-​Stokes equation an acceleration a, that is assumed to be constant for one time step, can be No many-scallop theorem: Collective locomotion of reciprocal swimmers.